Rotary scraper with automatic elevating control



Sept. 20 1927.

J. 5. REYNOLDS I ROTARY SCRAPER- WITH AUTOMATIC ELEVATING CONTROL Original Filed Feb. 24, 1 2 4 Sheets-Sheet l Josue-P =5. far 405.

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1927. Sept J. s. REYNOLDS ROTARY SCRAPER WITH AUTOMATIC ELEVATING CONTROL Original Filed Feb.24; 2 4 Sheets-Sheet 4 M M irro/rrvfy.

Patented Sept. 20, 19 27.

- .U NlT ED STATES PATENT OFFICE.

JOSEPH S. REYNOLDS, OI LOIfG BEACH, CALIFORNIA.

ROTARY SCRAPER WITH AUTOMATIC ELEVATIN'G CONTROL.

Application filed February 24, 1925, Serial- No. 11,153. Renewed June 21, 1927.

' This invention relates to rotary scrapers such as are employed for leveling land.

The common type of rotary scraper comprises a scoo having a draft frame attached therewith by which it is drawn over a surface to be leveled. This scoop is drawn over the surface with a cutting edge thereof in engagement. When the scoop is full, a scoop control mechanism is operated in such a manner as to remove the cutting edge from digging positioninto a non-digging or carrying position. The scraper. is then drawn to a suitable dumping place where the control mechanism is further operated so as to permit a dumping of the accumulated dirt. v

In the general type of rotary scrapers suchc0nt rol mechanisms are hand-operated, being actuated by the driver of a tractive vehicle of the scraper. These hand controlled operating mechanisms are very successful in small scrapers, being easily handled by the operator; however, when such arrangements are employed on large capacity scrapers, it is found that hand-operating control mechanisms are very impractical, owing to the-fact that it requires more than a mans strength for operation thereof It is an object of my invention to provide a rotaryscraper of the character mentioned in which the'weight of the load carried by the scoopof the scraper will assist in removing the scoop from digging position in- Y to carrying osition. v

It is anot er object of my invention to provide a, rotary scraper of the character mentioned in which the weight of the load 1 carried by the scoop will automatically retion to provide a rotary scra ;move the scoop from digging position into carrying position.

.It is a still further. object of my invenr having-a scoop control mechanism whic may be adjusted so that the scoop .will be removed from digging position lnto carrying position when any desired load is accumulated in the scoop.

.The rotary scraper of my invention includes a scoop which 'is rotatably attached a to a suitable draft frame.

For controlling the position of the scoo a scoo control mechanism is provided. .ssocia I with the scoop controlmechanism is a means whereby said mechamsm Wlll be operated in such a manner as to remove the scoop from digging into carrying position when the load to the inventor, the control mechanism is engageable with the scoop near each end thereof. It is found that these engagements do not always release at the same time. Releasin of one engager prior to the releasing 0 another allows one end of the scoop to partially rotate while the other remains in position. This. causes great strains in the scoop and its connected arts Y distorting them and causing a ra i destruction thereof; My invention y providing a single engagement near the center of the scoop eliminates all these disadvantages. f

Other objects and the salient advantages of this invention will be made'evidentrhereinafter Referring to the four sheets of drawings in which I illustrate my invention,

Fig. 1 is an elevational view of fa rotary scraper embodying the features of my invention, this view showing the scoop control mechanism in digging sition.

Fig.2 is an elevational view of the rotary scraper shown in Fig. 1, this view showing the scraper in carrying Iposition.

Fig. 3 is a plan view 0 ig. 2.

F ig. 4 is an enlarged fragmentary sectional view of the forward end of the rotary scralper taken substantially on the line 44 of ig. 2. a

Fig.5 is an enlargedfragmentary view showing the position of the rotary scraper when it is in carrying position. 1

Fl 6 is an enlarged fragmentary sectiona view of a portion of the control mechanism of my invention, this view showing clearly the latch construction and means for releasably locking the latch bar of my invention an elevated position.

\ Fig. 7 is a fragmentary sectional view taken substantially on the line 7-7 of Fig. 5.

Fig. 8 is a plan View of the fragmentary showing of the scoop control mechanism I in Fig. 6.

extend parallel to the sides 17 of the scoop 11 and pivot thereto by meansof trunnions 19. The side bars 18 are directed diagonally inward at 20 and conjoin with a central bar 21 at the forward end thereof. as clearly shown in Fig. 4. The forward ends of the side bars 18 and the central bar 21 are secured together betweenv plates 24 by bolts 25. Adjacent to the point 20 at which the side bars 18 are directed inwardly, a cross bar 27 is secured by suitable bolts 28 extending through the ends of the cross bar 27 and the side bars 18. The rear end of the central bar 21 is secured, as indicated at 30, to the cross bar 27. Secured to the scoop- 11 in substantially a central position is a central stop bar which carries a load ing stop 36, a spreading stop 37 and a travellmg stop 38.

,In th drawings I show the loading stop 36 in engagement with an engager 40 carried on a shaft 41 which extends bet-ween the rear ends 42 of arms 43 which form a part of a latch bar 44. The forward end of the'latch bar 44 pivots at 45 to.a dump lever 46, this dump lever 46 pivoting to the central bar 21 at 47. The rear end of the latch.

bar 44 is supported b links 48 which pivot on a pin 49 carried y the arms 43. The upper ends of these links 48 are pivot-ally secured on a pin 51 which is carried by plates 53 of a loading lever 54. This loadly shown in Fig. 6', are secured by bolts 57 to the cross bar 27.

Pivoted to one side of the central bar 21, as clearly shown inFig. 6, is a dog 60, -this dog pivoting on a pivot 61 carried by the central bar 21. The upper end ofthe dog 60 has a tension spring 62 attached thereto at'63. The forward endof the spring 62 is connected to adjustment links 64 by a pin 65 extending, through one of the series of holes 66. The adjustment links 64 pivot at 67 to a plate 68,which forms a part of the latch bar 44. The dog' 60 is restrained from moving forwardly beyond the position shown in the drawings by a lug 70 which engages the cross bar 27,as clearly illustrated in Fig. 6. The spring 62 exerts a pull upon the latch bar 44 and resiliently retains it in the position shown in the drawings. In other words, thespring 62 retains the latch bar in latching position'or in such a position that it will engage a stop of the scoop. adjusted by extending the pin 65 through other of'the holes 66 of the links 64.

' The latch bar is removed from latching position by an'actuation of the dump lever 46. This dump lever 46 has a rope 73 at tached to the upper end thereof which exli' ends forwardly to a tractor 74, which is or pulling the rotary scraper. The driver of t e'tractor exerts a pull upon the rcpe 73. swinging the dump lever 46 forwar ly into the position indicated by dotted lines 75 of Fig. 6. This moves the latch bar 44 into unlatching position, thus disengaging the engager 40 and a stop. carried on the stop bar 35. j

The latch bar 44 is removed fromv dei pressed position, such position being shown The tension of the spring may be in Fig. 1 and by dotted lines 77 in Fig. 6,

into elevatedposition, such positions being shown in full lines in Figs. 2, 3, 5, 6, .7 and 8 by an actuation of the loading lever 54. The upper end of the loading .lever- 54 has a rope 76 secured thereto which extends forwardly to the-t-ractive vehicle 74. The rope 76 serves as a manual meansfor'swinging the lever 54 forwardly; however, myfiinvention provides an automatic means for swinging the lever 54, as will be described later on. By swinging the lever.54 from ted lines 78 of Fig. 6 into the position shown in full lines in Fig. 2 and Fig. 6, the latch. bar 44 is moved from the dotted line osition 7 7 in Fig. 6 into the full line posltion shown in this figure, that is, the latch bar is' moved from depressed into elevated position. When the lever 54 isswung forwardly as shownby the full lines in Fig. 6, it

'the position shown in Fig. 1 or by the dotpivots on the pivot 56 and lifts the links 48 upwardly. This in turn elevates the rear end of the latch bar 44. The elevated position of the latchbar 44 is governed by the engagement of extending ends '80 of the pin 51 with stop formations 81, as shown clearly in Figs. 5, 6, 7 and 8,- -which are formed at the upper end of the uprights 55.

My invention provides a means for positively retaining the latch lever-in elevated osition and consequently the scoop in carrymg position until the dump lever 46 is actuated. On the forward face of the dog 60 is a projection 83 providing a: shoulder 84 and an inclined face85. A pin 88 is carried by the latch, bar 44. As the latch bar 44 is moved into' elevated position, the pin 88 engages the inclined face 83, swinging the dog 60 rearwardly until the pin 88 passes thereby, at which time the. dog returns to the position shown in Fig. 6, and thepin 88 will rest on the shoulder 84. The latch bar by this construction is positively retained in upper position until the dump lever 46 is actuated. When the dump lever 46 is actuated, the latch bar 44 moves forward to the extent that the pin 88 is removed from engagement with the shoulder 84. The parts are proportioned, however, so that the--engager 40 disengages with a stop of the scoop previous to the disengaging of-the pin 88 and the shoulder 84. This arrangement is provided so that the latch bar 44 and the associated mechanism will not be swung into lower position by the weight of the load carried by the scoop asthis might result in much damage to these parts. g

The means for automatically actuatingthe scoop. control mechanism includes a tilting bar 95 which is pivotally secured bya bolt 96 extending through a hole 97 in the rear end of the bar 95,,and extending through the plates .53 of the loading lever 54, as clearly shown in Figs. ,6, 7 and 8. This tilting bar extends forwardly from the load ing lever 54 andis connected to the upper end ofan actuating lever 98 by means of a pin 99 extending through a slot 100 formed in the forward end thereof. This actuating lever 98 forms a part of an intermediate member 103 and has plates 104 secured at the lower end thereof, as shown in the drawings. Theintermediate member 103 pivots by a bolt,105 to the plates 24. The plates 104 of the intermediate member 103 have openings 106 through which a rod 107 extends for securing the link 108 of the tractive vehicle 74 thereto. The rotary scraper is drawn over the ground by the tractiveivehicle' 74 and is pulled b means of the intermediate member 103. t 110 there connects to the intermediate member a tension spring 111. A rearward end of the tension spring 111 connects to a member 112 which extends through a bracket 11? secured to' the central.

bar 21 A nut 115 is threaded on the end of the member 112,'which nut'is advanced or re- Itracted thereon for varying the tension in the spring 111. The spring 111 is provided for the purpose of resiliently retaining theintermediate 'member in the position shown in Fig. 1 of the drawing. When the member 103 is moved into the position shown in Fig. 2, the tilting bar 95 is pulled forwardly, thus exerting a pull upon the dumping lever 54 which actuates the latchmechanism in the same manner as would a pulling upon the rope 76.

-- A complete operation of this modification of my scraper is substantially as follows:

Considering the rotary scraper in digging position, as shown in Fig. 1 of the drawings, it will'be seen that the cutting edge 15 of the, scoop 11 is in engagement with the sur .face of the. ground.\ The scraper'is drawn along the ground by a-tractive vehicle 74, the pull upon the frame '12 being transferred through the intermediate member 103. As

the scoop moves over the ground, a load of.

dirt is.gradually accumulated. As this load accumulates, the force necessary to drag the scraper increases, that is to say, as the weight of the load carried in the scraper increases,

the opposition to pulling is greater, and the force necessary to pull the scraper is reater. From the drawings-it will be seen t at the link 108 secures tothe intermediate member 103 eccentric with respect to the pivot 105;

thereof. For'this reason, as the scraper gathers dirt and the weight of the load.car-

rierl therebyincreases, the intermediate inem her 103 will'swing forwardly with respect to the frame 12 in opposition to the action of the. spring 111; .When the intermediate member has moved to the extent shown in Fig. 2, the actuator lever 98 will have pulled the tilting bar 95 forwardly suilicient to swing'the, loading lever 54 into elevated position, thatis, in such a position that the pin .is retained in elevated position by the pin and dog cooperation. The movement removes the scraper into carrying position; and it is obvious from Fig. 2 that at this time the cutting edge 15 of the scoop 11 is out of engagement with the surface of the ground,

and the scoop is dragging on the back por-' tion. of the bottom 14 thereof. As the inter- 51 engages the stops 81 and the latch bar 44' mediate member 103 swingsforwardly, it

in a pile, the latch bar is retained in disengaging position until the stop 37 v has passed thereby. Itis then allowed to rethe stop 38, thus retaining the scoop travelling position- When it is desired to gather more dirt,-the actuator bar is moved into disengaging position by an actuation of the dumping lever 46. allowing the stop 38 to pass thereby, aft-er which-thelatch bar returns tolatching position so that the stop 36 will be engaged. If it is desired, to

turn to engaging position and will engage applied to the loading lever.

spread the dirt whefi it is dumped, the latch bar is removed ,only while the stop 36 passes thereby and is returned so that it will engage the stop 37. This permitsfthe scoop 11, to swing a partial rotation and the cutting edge 15 thereof is utilized to spread the dirt over an area.

The automatic dumping arrangement of the invention maybe adjusted so that it will actuate the different loads carried in the scoop 11. This is accomplished by regulating thetension of the spring 111 by advancing or retracting the nut 115 on the member 111. The depressed position of the latch bar 44 is controlled by the engagement of the actuating bar 98 of the intermediate member 103 with the forward end of the central bar 21, this engagement'being shown clearly in Fig. 1. To adjust-the depressed position of the latch bar 44, it is necessary to alter the (effective length of the tilting bar 95. This is accomplished by passing the bolt 96 through a different hole 97 in the rearward end of thebar95. I

In the drawing the mechanism is shown having an automatic operation ofthe latch mechanism. To utilize the pull of the trac-- tor for merely assisting in theoperation of the mechanism, it is necessary to pass the bolt 96 connecting the tilting bar 95 to the loading lever 54 throughopenings 120. As is obvious, thisshortens the effective lever arm of the tilting bar 95 on the loading lever 54, diminishing the momentof force When the parts are in this position, the automatic mechanism will not entirely remove the.

- scoop into carrying position, and it is necessar ,to actuate the lever 54by the'rope 76.

n light materials, the weight of the load when the scraper is full is not equal to the weight of a load of heavier-material. To compensate for'this, I provide a lower opening 121 through each of the plates 104 of the intermediate member 103 through which 'the bolt 107 may be passed for connecting,

the link 108 to the'intermediate member 103. This varies the effective lever arm and compensates for the change in weight per unit volume of the dirt being carried.

The scraper shown in Figs. 1 to 8 inclusive, and just described, has proven to be very successful. The automatic mechanism works Very successfully and is very valuable on large scrapers on which it is practically impossible to operate .the scoop control mechanism by hand without the use of mechanical screws, etc. which render the actuation of the mechanism very slow. scraper embodying the features of my invention requires considerably less attention than .the hand-operated scoop control mechanisms.

In actual practice I have found that it is not absolutely necessary to provide the dog for locking the latch. 44 in elevated position. If the load carried by the scoop is sufficient, the weight of the load retains the shown in the other view of the drawings, except. for the addition of a few parts.' Identical parts'in Fig. 9 will have the same tion is identical with that of the scraper figures as those parts in the other figures of p the drawings. -.In this modification I extend the side bars 18 rearwardly somewhat beyond the scoop 11, as indicated at 130. Extending between'the rearward ends 130 of the side bars 18 is a crank shaft- 131 having wheels 132 carried thereby-which are eccentrically: carried with respect to .the bearings 133 of the shaft 131.. Extending pull upon the link 135 which in turn pulls forwardly on the lever 134.. The lever 1341- rotates the'crank shaft 131, swinging it in such a manner as to swing the wheels 132'. downwardly with respect to the frame 12, i

as indicated by the dotted line position 136 of this figure. This movemente1evates the rear end of the frame 12 and lifts the scoop. 11 entirely from engagement with the SUI? face of the und. In this construction the drag ing o the scoop 11, when it is full, may e entirely done away with or may be partially relieved. i

In the drawings Ihave shown my invention applied to a rotary scraperhaving a control mechanism which engages with stops on the scoop .11 only at central points. It should be understood, however, that my in- .vention is not limited to. the specific conlla':

struction shown in the drawings but may be provided on scrapers usingtwo pointsof engagement, one point at each end of the scoop as is customary in some constructions of scrapers.

I claim as my invention:

-1. In a rotary scraper, the combination of: a draft frame; a scoop supporting one end of said draft frame to which said scoop pivotally attaches; a control mechanism for retaining said scoop'in digging position;- and an intermediate member pivotally so- HO upwardlyfrom the shaft 131'is a lever 134,

. ing position when .said scoop is loaded.

n a rotary scraper, the-combination of: a scoop; a draft frame. pivotally secured to and supported at one end by said scoop a stop carried by said scoop; a latch bar carried by said draft frame, said latch bar being adapted to engage said stop, thus retaining said scoop in. digging position; a. loading lever associated with said latch bar and said draft frame; and an intermediate member pivotally associated'with said latch bar and ivotally secured to said draft frame wherey said scraper is pulled. v

3. Inv a rotary scraper, the combination of: a draft frame; 'a scoo pivotally supporting one end of said aft frame and adapted to be drawn thereby; a stop carried by said scoop; a latch bar carried by said draft frame, said latch bar being adapted to engage said stop.,'thus retaining said scoop in diggin position; a loading lever pivotally attac ed to said draft frame; and an 1 intermediate member pivotally secured to and means mounte said draft frame whereby said draft frame is pulled, thus drawing said scoop, and pivotally connected to said latch bar for mo ving same.

4. In a rotary scraper, the combination of: a scoop; a draft frame pivotally secured to and supported at oneend by said scoop;

a stop carried b said scoop; a latch means carried by ,sai draft frame, said latch means being adapted to enga esaid stop, thus retaining said scoop in igging position; an intermediate member pivotally secured to said latch means and to said draftframe whereby said scraper is pulled; and means for resistinga relative movement bev tween said draft frame and said intermediate member. v t

5. In ascraper of the character described, the combination of: a draft device; a scoop; pivotally supporting one end of said dra device and adapted to be drawn thereby; a stop supporting member secured to said scoop substantially -midway between the ends thereof; a sto secured to said member; 5 on said draft device for holding or releasing said stop sons to permit the scoop to be held in scraping position, or released to dumping position as may be desired; an intermediate memberpivotally secured to said draft device whereby said scraper is pulled; and means for resisting a relative movement between said draft device and said intermediate member.

6. In a rotary scraper the combination of: a scoop having digging and carrying positions; a draft frame supported at one end by said scoop through which said scoop may-be pulled by a tractor, said frame be-1 mg extensible by the tractive pull of said tractor when said ull reaches a certain value, the front en .of' said frame being.

raised by said extension thereof; means for fixing said value; and means operated by the extension of said frameto move said scoopfromdigging to carrying osition. 7. In a rotary scraper the com ination of; ascoop having digging and carrying positions; a draft frame secured to and supported at one end by said scoop; a member pivoted to the front end of said frame; means for applying tractive pull to said frame through said member; 1 and means, actuated by said member when said tractive pull reaches a certain value, for moving said scoop from digging to carrying position.

- 8. In an automatic scraper control, the combination of a draft frame; a scraper bowl pivotally sup orting one end of said draft frame; a hitc device pivotally secured at the forwardend of the said draft frame and adapted to be secured to a draft im-' plement; and means secured to the said piv-" otal hitch device and adapted to be actuated at a' predetermined load within the said scraper for rotating the said scraper to a non-scraping position.

9. In an automatic scraper control, the combination of: a frame; a scoop pivotally sup orting one end of said frame; and a dra connection pivotally secured to the said frame and adapitled to operate at a predetermined load wit p n the scraper to rotate the said'scraper to a non-scraping position. 10. In an automatic scraper control, the combination of: a frame; a scraper pivotally supporting one end of said frame; an arm pivotally mounted on said frame; a latch bar associated with said framefmeans connecting the said arm and said latch bar; and 4 means secured to the said arm for connect; ing the said frame with a draft implement and operable at a predetermined load in the said scraper to actuate the said latch bar to engage t ejsaid scraper and to rotate the same to a non-scraping position.

11. In an automatic scraper control, the combination of: aframe; a scraper pivot ally mounted within the frame and supporting one end thereof; means for connecting the said frame with a draft implement and operable ata predetermined load for rotating thesaid scraper in the said frame; and

means for adjusting the said draft con-- necting means so as to regulate'the load at which the said scraper is rotated.

12. In an automatic scraper control, the combination of: a frame; a scraper plvotally mountedin the frame and supporting one end thereof; latch means secured to the frame and-adapted to 'be engaged with the said scraper for latching the said scraper inthe scraping position; means pivotally connecting the said frame with a draft implement; means pivotally connecting the said last named means with the said latch means and operable at a predetermined load for rotating the said scraper to a non-scraping position; and means associated with the said latch means for releasing the same to permit the scraper to rotate in the frame to dump the load.

13. In a scra er of the character described, the comblnation of: a draft device; a scoo pivotall supporting one end of said draft device an adapted to be drawn thereby; a stop supportin member secured to said scoop su stantially midway between the ends thereof; a stop secured to, said member; means mounted on said draft device for holding or releasing said stop so as to permit the scoop to be held in scraping position, or released to dumping position as may be desired; an means pivotally secured to the draft device and adapted to operate at a predetermined load within the scoop to rotate the said scoop to a nonscraning position.

14. lln an automatic scraper control, the combination of: a frame; a scraper pivotally mounted within the frame; latch means secured to the frame and adapted to engage the said scraper to hold the same in the scraping position; draft means secured to the said frame; means connecting the draft means with the said latch means so as to automatically actuate the saidlatch means at a predetermined load in the said scraper to rotate the said scraper to a non-scraping position; and means secured to the said latch means and manually operable before the said scraper has picked up the predetermined load for rotating the said scraper to the non-scraping position.

15. In a rotary scraper, the combination of: a scoop; a draft framepivotally secured to said scoop; a stop carried by sa1d scoopa latch bar carried by said draft frame, sai

latch bar being adapted to engage said stop,

thus retaining said scoop in digging posltion; a loading lever pivotally attached to said draft frame; a link connected to said loading lever and the rearward end of said latch bar; an intermediate member secured to said draft frame whereby said scraper is pulled; and a link extending between said intermediate member and said loading lever.

v 16. In a rotary scraper, the combination of: a scoop; a draft frame pivotally secured to saldscoop; a stop carried by sa1d scoop;

- a latch bar carried by said draft frame, said latch bar beingadapted to engage said stop, thus retaining said scoop in digging positlon; a loading lever pivotally attached to said draft frame; a link connected to said loading lever and the rearward end of said latch bar;- an intermediate member pivotally secured to' said draft frame whereby said neeasae scraper is pulled; and a link extending between, said intermediate member and said loadin lever.

17. n a rotary scraper the combination of a scoop having digging and carrying positions; a draft frame through which said scoop may be pulled by a tractor, said frame being extensible by the tractive pull of said tractor when said pull reaches a certain value; means for fixing said value; and

19. lln a rotaryscraper the combination of: a scoop having digging and carrying positions; a draft frame through which sa1d scoop may be pulled by a tractor, said frame being extensible by the'tractive pull of said tractor when said pull reaches a certain value; means for fixin said value; means operated by the extenslon of said frame to move sa1d scoop from digging to carrying position; means for automatically locking said scoop in carrying position; and means permitting said scoop to be moved manually from digging position to carrying position. a v

20. In a rotary scraper the combination of: a scoop having digging and carrying \p0sitions;'a draft frame through which said scoop may be pulled by a tractor, said frame being extensible by the tractive pull of said tractor when said pull reaches a certain value; means for fixing said value; means;

operated by the extension of said frame to move sa1d scoop from digging to carry- 1ng position; and means permitting said scoop to be moved manually from digging position to carrying position.

21. In a rotary scraper the combination of: a scoop having digging, carrying and dumping positions; a draft frame through which said scoop may be pulled by a tractor,

said frame being extensible" by thetractive pull of said tractor when said pull reaches a certain value; means for fixing said value; means operated by the extension of said frame to move said scoop from digging to carrying position; and means for manually disengaging said scoop from digging or carrying positions, and freeing said scoop for movement to dumping position.

22. In a rotary scraper the combination" of: a scoop having digging, carrying and which said scoop may be pulled by a tractor, said frame beingextensi le b the tractive pull of said tractor ,When sai pull reaches a certain value; means for fixing said value;

means operated by the extension of said frame to move saidscoop fromdigging to carrying position; means for automatically i locking said scoop in carrying position; and

means formanually disengaging said scoop from digging on carryingpositions, and

" gaging said scoop from di ing positions, and freeing said scoop for of: a scoop having digging, carrying and carrying position freeing said scoop for movement to dumping l means secured to the sald arm for connect.-

position.

I 2?. In a rotifiiyso rapier. the combination of: a scoop having ging, carrying and.

dumping positions; a aft frame through whic said scoop may be ulledvbyatractor,

said frame being extensl le by the tractive pull of said tractor when a certain value; means for 'means operated by the extension of said frame to move said scoop from digging to carrying position means for automatically locking sald scoop in carrying pos1t1on;-' I means permittingsaid scoop to be moved manually from digging position to carrying position; means for manually disen;

gging or carry-.

movement to dumping position.

24. In a rotary'scraper the combination,

dumping positions; a draft .frame through which said scoop maybe pulledb a tractor,

said frame being-extensible by t e tractive pull of said tractor when-said pull reaches. a certain value; means for fixing said Value; 1

means operated by the extension ofsaid frame to move said scoop from diggingto means permitting said scoop to be. moved manually from dlgging position'to carrying position; and means for manually 'diseng'aglng said scoop from dig;

, ging or carrying positions, and freeing said scoop for movement to dumping position.

I positions; a draft frame through which sai combination of: aframe'; a' scraper ally mounted in the-frame; and a dra cona 25. In a rotary scraper the combination .of: a scoop having digging and, carryin scoop may be ulled by a tractor, said frame being extenslb e by :the tractive pull of said tractor when said pull reaches a certain value, the front end of said frame being raised by said extension thereof; means for fixing said value; and means operated by the extension of said frame to move said scoop from digging to carrying position.

26.. In an automatic scraper control, the

' ivotnection pivotallysecured to the said frame and adapted to automatically operate at a pre etermiiied load within the scraper to rotate the said scraper to anon-scrap ng pos1- tion.

27. In an automatic scraper c0ntrol,,the' combination of: a frame; a scraper rotatablymounted in the frame; an arm pivotally mounted at the-forward end of the said frame; an .actuatin lever pivotally secured at the other end- 0 the sald frame; means connecting, the said arm and said lever; and

ing the said frame with a draft implement and operable at a predetermined load in the said scraper to actuate the said lever to engage the said scraper and to rotate the same v 28; In. a rota scraper, the combination aft frame to which said mechanism for retaining said scoop in digposition; means secured to said draft a me whereby said scraper is pulled, said means being associated with said control mechanism'so as to automatically operate said mechanism and remove said scoop from digging into carrying position when: said scoop is loaded.

29.- In a rotary scraper the combination of: a scoop having digging and carrying positions; adraft frame through which said scoo may be pulled by a tractor; a

link in said draft frame through which'link tractive pull from said tractor is, transmitted to said scoop, said link being misaligned an adjustable degree with the direction of said tractive pullso that a tendency is set up proportional to said tractive pull to align said link with the direction of said pull; and means, operated by said tendency of said link, to move said scoop from diggindg position 1 to carrying position 'when sai tractive pull reaches a certain valuev 30. In a rotary scraper the combination of: a scoop having digging and carrying positions; a draft-frame through which said scoop may be pulled by a tractor; a mechanism "for moving said scoop from digging positionto carrying position; and a lever jrecelving tractive pull from said tractor,

transmitting tractive pullto said frame, and operatin the tractive pull received thereby reaches a given value. a

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 17th day of February, 1925, I JOSEPH. S. REYNOLDS.

the aforesaid mechanism when.

,DHSOLADMER 1,642,826.J0seph S. Reynolds, Long Beach, Calif. ROTARY Sc'RArER WITH Auro- MATIC ELEVATING CONTROL. Patent dated September 20, 1927. Disclaimer filed December 26, 1933, by Olive M. Reynolds, trustee of the Estate of Joseph 'S. Reynolds, deceased.

Hereby enters this disclaimer to that part of the claims in said specification which is in the following Words, to wit: I

1. In, a rotary scraper, the combination of: a draftframe; a scoop supporting one end .of said draft frame to which said scoop pivotally attaches; a control mechanism for retaining said scoop in digging position; and an intermediate member pivotally secured to said' draft frame whereby said scraper is pulled, said intermediate member being associated with said control mechanism-so as to operate sald mechanism and 1 remove said scoop from digging into carrying position when said scoop is loaded. 6. In a rotary scraper the combination of: a scoop having digging and carrying positions; a draft frame supported at one end by said scoop through which said scoop may be pulled by a tractor, said frame being extensible by the tractive pull of said ,tractor when. said pull reaches a certain value, the front end of said frame being raised by said extension thereof; meansfor fixing said value; and means operated by the extension of said frame to move said scoop from digging to carrying position. i

9. in an automatic scraper control, the combination of: a frame; a scoop pivotally supporting one end of said frame; and a draft connection pivotally secured to the said frame :and adapted to operate at a predetermined load within the scraper to rotate the said scraper to a non-scraping position. I

1 1. In an automatic scraper control, the combination of: a frame; a scraper pivot.-

ally mounted within the frame and supporting one end thereof; means for connecting the said frame with'a draft implement and operable at a predetermined load for rotating the said scraper in the said frame; and means for-adjusting the said draft connectmg means so as .to regulate the load at which the said scraper is rotated.

12. In an automatic'scraper control, the combination of: a frame; a'scraper pivotally mounted inthe frame and supporting one end thereof; latch means secured .tothe frame and adapted to be engaged with the saidscraper for latching the sald, scraper m the scraping position; means pivotally connecting the said frame with a draft implement; means pivotally connecting the said last named means with the said latch means and operable at a predetermined load for rotating the said scraper to a non-scraping position; and means associated with the said latch means for releasing the same to permit the scraper to rotate in the frame to dump the load.

' 13. In a scraper of the character described, the combination of: a draft device;

a scoop pivotally supporting one end of said .draffidevice and adapted to be drawn thereby; a stop supporting member secured to said scoop substantially midway between the ends thereof a stop secured to said member; means mounted on said draft device for holding or releasing said stop so as. to permit the scoop to be held in scraping position, or released. to dumping position as may be desired; and means pivotally secured to the draft device and adapted to operate at a predetermined loadwithin f the scoop to rotate the said scoop to a non-scrapingpositiom 14. In an automatic scraper control, the combination of: a frame; a scraper pivotally mounted within the frame; latch means secured to the frame and adapted to engage the sald scraper to hold the same in the scraping position; draft means secured to thesaid frame; means connecting the draft means with the said-latchmeans so, as to automatically actuate the saldlatch means at a predetermined load in the said scraper. to rotate the sald scraper to a non-scraping position; and means secured to the said latch means, and manually operable before the said scraper has picked up the predetermined load .for rotating the said scraper to the non-scraping position.

I 17. In a rotary scraper the combination of: a scoop having digging and carrying positions; a draft frame through which said scoop may be pulled by a tractor, said frame being extensible by the tractive pull of said tractorfwhen said pull reaches a certain value; means for fixing said value; and means operated by the extension of said frame to move said scoop from digging to carrying position.

520. In a rotary scraper the combination of: a scoop h f fi ng n c. e

ositions; a draft frame through which said scoop may be p ed by a tradtor, sa"

rame being extensible 'by the tractive pull of said tractor when said pull reaches a certain'value; means for fixing said value; means operated bythe. extension of said frame to move said scoop from digging to carrying position; and means permitting said scoop to be moved'manually from digging posltion to carrying position.

21. In a rotary scraper the combination of: a scoop having digging, carryingand dumping positions; a draft frame through which said scoop may be pulled by a tractor, said frame being extensible by the tractive pull'of said tractor when said pull reaches a certain value; means for fixing'said value; means operated by the extension of said frame to move said scoop from digging to carrying position; and means for manually disengaging said scoop from digging or carrying positions, and freeing said scoop for movement to dumping position.

24. In.a rotary scraper the combination of: a scoop having, digging, carrying and dumping positions; a draft frame through which said scoop may be pulled by a tractor, said frame being extensible by the tractive pull of said tractor when said pull reaches a certain value; means for fixing said value;means operated by the extension of said frame to move said scoop from digging to carrying position; means permitting'said scoop to be moved manually from digging position to carrying position; and means for manually disengaging said scoop from digging or carrying positions,'and freeing said scoop for movement to dumping position.

I 25. In a rotary scraper the combination of: a scoop havin digging and carrying positions; a draft frame through which said scoop may be pul ed b a tractor, said frame being extensible by the tractive pull of said tractor when sai pull reaches a certain value, the front end of said frame being raised by said extension thereof;

means for fixing said value; and means operated by the extension of said frame to move said scoop from digging to carrying position.

26. In an automatic scraper control, the combination of: a frame; a scraper pivotally mounted in the frame; and a draft connection pivotally secured to the said frame and adapted to automatically operate at a predetermined load Withinthe scraper to rotate the said scraper to a non-scraping position.

28. In a rotary scraper, the combination of: a scoop; a draft frame to which said scoop is pivotally attached; a control mechanism for retaining said scoop in digging position; means secured to said draft frame whereby said scraper is pulled, said means being associated with said control mechanism so as to automatically operate said mechanism and remove said scoop from digging into carrying position when said scoop is loaded.

"29. In a rotary scraper the combination of: asco'op having digging and carrying positions; a draft frame through which said scoop may be pulled by a tractor; a link in said draft frame through which link tractive pull from said tractor is transmitted to said scoop, said link being misaligned an adjustable degree with the direction of said tractive pull so that a tendency is set up proportional to said tractive pull to align said link with the direction of said pull; and means, operated by said tendency of said link, to move said scoop from digging position to carrying position when said tractive pull reaches a certain value.

. 30. In a rotary scraper the combination of: a scoop having digging and carry- I ingpositions; a draft frame through which said scoop may be pulled by a tractor; a

mechanism for moving said scoop from digging position to carrying position; and a lever receiving tractive pull from said tractor, transmitting tractive pull to said frame,

and operating the aforesaid mechanism when the tractive pull received thereby reaches a given value.

[Ofiicz'al Gazette January 16, 1984.] 1 

